I was not sure about sharing links to fab shops because of the relationship between Fritzing and Aisler but since you asked. I have used Elecrow with only minimal problems. No problems with the boards themselves just problems with the way Fritzing does some stuff on my more complicated boards that cause their software issues. When there is an issue they will email you with a cryptic message that is no doubt the result of translation to English from Cantonese at which point you may have to make some small changes. Things like Fritzing tiny silkscreen text is 0.7mm tall and Elecrow wants 0.8mm tall or greater.
Also when you order select registered mail and then in the notes ask them to use E-packet (EUB). It is as fast as DHL but costs almost nothing and rarely gets any customs charges even when above the $20 threshold.